M41ST85WMH6TR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) with Non-Volatile Memory (NVM)
• Characteristics:
  • Low power consumption
  • High accuracy timekeeping
  • Non-volatile memory for data storage
• Package: 20-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides accurate real-time clock functionality with non-volatile memory for data storage in a compact package.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±2ppm (parts per million)
• Memory Size: 8KB (8192 bytes)
• Interface: I2C (Inter-Integrated Circuit)

Detailed Pin Configuration

The M41ST85WMH6TR has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. VBAT - Backup Power Input
2. GND - Ground
3. SDA - Serial Data Line (I2C)
4. SCL - Serial Clock Line (I2C)
5. SQW/INT - Square Wave Output / Interrupt Output
6. VCC - Power Supply Input
7. NC - No Connection
8. NC - No Connection
9. NC - No Connection
10. NC - No Connection
11. NC - No Connection
12. NC - No Connection
13. NC - No Connection
14. NC - No Connection
15. NC - No Connection
16. NC - No Connection
17. NC - No Connection
18. NC - No Connection
19. NC - No Connection
20. NC - No Connection

Functional Features

• Real-time clock functionality with accurate timekeeping.
• Non-volatile memory for data storage, ensuring data retention even during power loss.
• I2C interface for easy integration with microcontrollers and other devices.
• Square wave output and interrupt output for additional functionality.

Advantages and Disadvantages

Advantages

• Low power consumption, making it suitable for battery-powered applications.
• High accuracy timekeeping ensures precise timing in various applications.
• Non-volatile memory allows for data storage without the need for an external backup source.
• Compact package size enables space-saving designs.

Disadvantages

• Limited memory size (8KB) may not be sufficient for applications requiring extensive data storage.
• Lack of additional communication interfaces may limit compatibility with certain systems.

Working Principles

The M41ST85WMH6TR combines a real-time clock circuit with non-volatile memory to provide accurate timekeeping and data storage capabilities. The integrated circuit utilizes a low-power oscillator to maintain accurate timekeeping, even during power interruptions. The non-volatile memory ensures that data stored within the IC remains intact, allowing for reliable data retrieval upon power restoration.

Detailed Application Field Plans

The M41ST85WMH6TR is well-suited for a wide range of applications, including:

1. Embedded Systems: Provides accurate timekeeping for industrial automation, IoT devices, and embedded computing systems.
2. Consumer Electronics: Enables precise timing functions in digital cameras, set-top boxes, and home appliances.
3. Automotive: Supports automotive applications such as dashboard clocks, event logging, and data storage.
4. Medical Devices: Facilitates accurate timekeeping and data storage in medical equipment and patient monitoring systems.
5. Security Systems: Integrates with security systems to maintain accurate timestamps and store critical event data.

Detailed and Complete Alternative Models

1. M41ST87W: Similar to M41ST85WMH6TR, but with a larger memory size of 16KB.
2. DS3231: Real-time clock module with temperature compensation and alarm functionality.
3. PCF8563: Low-power real-time clock module with I2C interface and battery backup.

(Note: The above list is not exhaustive and serves as an example of alternative models.)

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